NEW
Font size
WorksheetsElectromagnetic Radiation and Bohr`s Model
Total questions: 20
Worksheet time: 20mins
Which of the following is directly related to the energy of the photons of EMR?
speed
wavelength
frequency
Planck constant
Calculate the energy of the photons in a type of electromagnetic radiation if the frequency is 4.5 x 1018 Hz.
2.98 x 1015 joules
1.47 x 10-52 joules
6.79 x 1051 joules
2.98 x 10-15 joules
Liam, Avery, and Noah are discussing the properties of electromagnetic waves. They all agree that all electromagnetic waves have the same...
frequency
speed
wavelength
energy
Which of the following EMR carries the greatest amount of energy?
x-rays
gamma rays
infrared rays
visible light
Sophia is observing ocean waves and notices that a wave with a large wavelength will have a ______ frequency and _____ energy.
high, low
high, high
low, high
low, low
During a physics class, David, Luna, and Elijah are studying waves. They notice that the blue section of a wave diagram is measuring _________________.
wavelength
crest
trough
amplitude
_____ have the longest wavelengths and lowest frequencies of all electromagnetic waves.
Microwaves
Radio waves
Gamma rays
Ultraviolet
What is a photon?
When radiation bursts through electric waves
The emission of electrons from a metal caused by light striking the metal
The rate at which a wave's energy flows through a given unit of area
Packets of electromagnetic energy
Light is emitted when an electron moves from the ________ state to the _________ state
excited, ground
ground, excited
Solve this problem using the equation:
c = λν Calculate the wavelength of light that has a frequency of 5.2 x 1012/s. The speed of light is 3.00 x 108 m/s.
5.8 x 10-5 m
5.8 x 10-7 m
5.19 x 1014 m
1.56 x 1023 m
Which wave has the highest frequency?
A
B
C
None (same frequency)
Charlotte, Henry, and Zoe are comparing the energy of different colored lights in their science project. Which color of light has the smallest energy in this group?
red
yellow
green
blue
When atoms _____________ energy, their electrons move to higher energy levels. These electrons _____________ energy by emitting light when they return to lower energy levels.
lose, absorb
absorb, lose
lose, lose
absorb, absorb
David, Luna, and James were discussing the atomic model in their chemistry class. They were trying to remember who proposed that electrons are only found in specific, discrete circular orbits around the nucleus. Can you help them?
Albert Einstein
Erwin Schrodinger
Ernest Rutherford
Niels Bohr
During a science experiment, Henry observed the hydrogen spectrum and noticed a line with the shortest wavelength. This line is produced when an electron moves:
from n=2 to n=1
from n=4 to n=1
from n=3 to n=1
from n=4 to n=3
Which drawing represents the process by which an emission line is formed? [Emission means that energy is being "emitted" or released by the atom.]
A
B
C
D
What subatomic particle is responsible for the spectral lines seen in emission spectra diagrams?
Electrons
Protons
Neutrons
Olivia, Abigail, and Henry are studying atomic structure in their chemistry class. They learned that electrons occupy energy levels around the nucleus of an atom. If they were to consider the second energy level of an atom, how many electrons can it accommodate?
2
8
18
32
Ava, Abigail, and Jackson are in a chemistry lab. They are given unknown substances and are asked to identify the elements present in them. Which technique would be most useful for them?
Blood testing
Watching fireworks
Performing flame tests
None of the above
An unknown compound is used in a flame test. It glows blue-green when passed through the flame. What is the likely identity of this compound?
Calcium
Copper
Strontium
Potassium
